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I <br /> i <br /> 1 TABLE 1 <br /> { GROUNDWATER MONITORING DATA <br /> Quik Stop No 076 <br /> 1030 South Olive Avenue, Stockton, California <br /> I j <br /> ethyl- total I� TOC GW <br /> Well Date TPHg benzene (toluene benzene xylenes MTBE DIPE ETRE TAME TBA DCA EDS DTW Elevation Elevation Comments <br /> Number Sampled (ug/L) (ug/L) i (ug/L) (ug/L) I (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (feet) (feet msl) (feet msl) <br /> MW-1 7111103 210 <0 50 ; <0 50 <0 50 ! <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 64 12 nm nm no odor I no sheen <br /> screened 3115104 1000 30 110 12 56 <0 50 <0 50 <0 50 <0 50 6 3 099 0-95 6624 nm nm no odor 1 no sheen <br /> Interval 6110104 410 1 4 I 4 9 062 l 2 4 <0 50 <0 50 <0 50 <0 50 6 0 <0 50 <0 50 6542 nm nm no odor/no sheen <br /> 55'- 75' I J <br /> 6/1/05 MW-1 drilled out,lboring reamed to 10"and deepened to 80', MW-1 re-Installed as 2"well <br /> 60-80' 6/6105 160 <0 50 1 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 64 60 31 09 -3351 no odor/no sheen <br /> 8/17105 3100 <0 50 <0 50 <0 50 <0 50 -<0 50 na na na na - na na 6530 -3421 no odor/no sheen <br /> 11/16/05 1400 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50- <5 0 <0 50 <0 50 6580 -3471 no odor/no sheen <br /> I ' <br /> Notes TPHg-total petroleum hydrocarbons as gasoline' DCA- 1,2-dlchloroethane ug1L-micrograms per liter or parts per billion(ppb) <br /> MTBE-methyl-t-butyl ether ; EDB-1 2-dlbromoethane <-less than reporting Amit given - <br /> DIPE-dllsopropyl ether DTW=depth to groundwater <br /> ETBE-ethyl-t-butyl ether TOC=top of casing <br /> TAME-tert-amyl methyl ether 1 , msl=mean sea level <br /> TBA-tert-butanol I GW=groundwater <br /> I _ <br /> I - <br /> ' I - <br /> f <br /> - <br /> I , <br /> I <br /> 7076 <br /> Probe 076 42 191 of 1 HORIZON ENVIRON INC <br />